Tube-cutter.



No. 665,578. Patented Jan. 8, l90l'. H. 0RD.

TUBE CUTTER. (Application flied Oct. 2a, 1900.)

(No Model.)

UNITED STATES LATENT FFICE.

HARRY 0RD, OF MILWAUKEE, WISCONSIN.

TUBE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 665,578, dated January8, 1901.

Application filed October 29, 1900. Serial No. 34,745. I (No model.)

To all whom, it may concern:

Be it known that I, HARRY 0RD, a subject of the Queen of Great Britainand Ireland, and a resident of Milwaukee, in the county of Milwaukee andState of Wisconsin, have invented certain new and useful Improvements inTube-Cutters; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention has for its object to provide simple, economical, andconvenient tools especially designed for cutting boiler-tubes from theinside; and it consists in certain peculiarities of construction andcombination of parts hereinafter particularly set forth with referenceto the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents what is for the most part alongitudinal sectional view of a tube-cutter in accordance with myinvention positioned for use, the plane of the View being indicated byline 1 1 in Fig. 4:; Fig. 2, a transverse section of the tool on theplane indicated by line 2 2 in Fig. 1; Fig. 3, a detail horizontalsection on the plane indicated by line 3 3 in Fig. 2; and Fig. 4,an endelevation, partlyin transverse section, on the plane indicated by line 44 in said Fig. 1.

Referring by letter to the drawings, A indicates a boiler-head, and Bone of the tubes that are set in said head. Engaging the tube is shownone end of my improved cuttingtool. A centrally-bored cylindrical stock0 of the tool has an axial end stub b, that turns in a central apertureof a supporting-disk D, and a set-sdrew c engages this stud, awasher clbeing interposed between the screw-head and said disk. Fittinga mortisein tool-stock O is a transversely-slotted slide-block E, provided withan end recess, and a cutter-wheel F is journaled in block-ears flankingsaid recess. A rotative spindle G engages the toolstock and is providedwith an eccentric end stud f, engaging the slot in the slide-block, anda spiral spring H, wound on the spindle, has one of its ends connectedto a collar g of said spindle, the other end of this spring beingengaged with a longitudinal groove h in a counterbore of said stock,said spindle-collar being arranged in an enlargement of the counterbore.A stay-ring I, in opposition to spindle-collar g, has screw-threadconnection with a reduced end of the tool-stock, and held by a screw ina seat longitudinally of the spindle is a right-angular stop J, thatalso engages a segmental recess j in the stayring.

Loose on the spindle G, between the stayring I and another collar is, isa hand-sleeve K for the tool-operator, and shown in screwthreadconnection with the tool-stock is a friction-shell L, that opposes theboiler-head aforesaid, this shell being adjusted to determine theposition of the cutter-wheel F in a boiler-tube, a set-nut M being runon said spindle against the shell to hold the same in adjusted position.The collar 7c is detachably connected to the spindle by a screw.

In practice rotation at a sufficiently-high speed is imparted to spindleG, and the tool as a whole is controlled by grasp of the operator on thehand-sleeve K, loose on said spindle. The friction-shell L beingadjusted to desired position on the tool-stock and there held by theset-nut M, the forward end of the tool is run in a tube B as far as theset of said friction-shell will permit. Owing to the engagement of theeccentric spindle-stud f with the slot in the block E and the frictionof shell L against the boiler-head A, the block E, carrying the cutter,is moved outward to sever the adjacent tube, the rotation of the saidshell and the tool-stock being somewhat slower than that of the spindleG, because of the friction of said shell against the adjacentboiler-head. The differential speed of rotation on the part of spindle Gand frictionshell L results in contraction of the spring H. Hence whenthe tool is moved to relieve pressure of said shell on the opposingboilerhead expansion of said spring will cause a shift of the aforesaidshell to retract slideblock E and cutter therewith, so that said toolmay be withdrawn, the stop J,arranged as shown, serving to limit thetravel of said block in either direction of its movement.

From the foregoing it will be readily understood that theherein-described cuttingtool may be readily shifted from tube to tube ofa boiler without stopping rotation of the spindle constituting part ofsaid tool.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A tube-cutting tool comprising an end disk, a mortised stock havingan axial stud held in loose engagement with a central aperture in thedisk, a slide-block in the stockmortise, a rotative spindle held inloose engagement with the stock and having eccentric connection with theslide-block, a spring connecting the spindle and stock, a cutter inconnection with an end of said slide-block, and a friction-shell carriedby said stock.

2. A tube-cutting tool comprising an end disk, a mortised stock havingan axial stud held in loose engagement with a central aperture in thedisk, a slide-block in the stockmo'rtise, a rotative spindle held inloose engagement with the stock and having eccentric connection with theslide-block, aspring connecting the spindle and stock, a cutter inconnection with an end of said slide-block, a,friction-shell carried bysaid stock, and means for limiting travel of the aforesaid slide-blockin either direction of its movement.

3. A tube-cutting tool comprising an end disk, a mortised stock havingan axial stud held in loose engagement with a central aperture in thedisk, a slide-block in the stockmortise, a rotative spindle held inloose engagement with the stock and having eccentric connection with theslide-block, a spring connecting the spindle and stock, a cutter inconnection with an end of said slide-block, and a friction-shell inadjustable connection with said stock longitudinally of same.

4:. A tube-cutting tool comprising an end disk, a mortised stock havingan axial stud held in loose engagement with a central aperture of thedisk, a slide-block in the stockmortise, a rotative spindle held inloose engagement with the stock and having eccentric connection with theslide-block, a spring connecting the spindle and stock, a cutter inconnection with an end of said slide-block, a friction-shell carried bysaid stock, and a hand-sleeve loose on the spindle.

5. A tube-cutting tool comprising an end disk, a mortised 'stock havingan axial stud held in loose engagement with a central aperture of thedisk, a slide-block in the stockmortise, a cutter-Wheel in journalconnection with a recessed end of the slide-block, a rotative spindleheld in loose engagement with the stock and having eccentric connectionwith the slide-block, a spring connecting the spindle and stock, acutter in connection with said slide-block, a friction-shell carried bythe stock, means for limiting travel of the aforesaid slide-block ineither direction of its movement, and a hand-sleeve loose on thespindle. In testimony that I claim the foregoing I have hereunto set myhand, at Milwaukee, in the county of Milwaukee and State of Wisconsin,in the presence of two witnesses.

HARRY 0RD.

Witnesses:

N. E. OLIPHANT, B. O. ROLOFF.

